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Mark LThere is a great difference between the "professional model bat" and what can be called truly "game used" bat. The former would be the same model and roughly the same length and weight as bats that are known to have been used by the player. But the latter would have to match factory records exactly and, if possible, have some further provenance, like side-writing from the bat factory or a contemporary letter. I suspect that the card companies that carve up the bats are working with the more common professional model bats.